CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Change in net unrealized gains (losses) on investments, income tax	$ 529,838	$ (673,302)	$ 392,372
Reclassification adjustment for investment amounts included in net income, income tax	(23,903)	(15,396)	(3,317)
Change in net unrealized gains relating to other-than-temporary impaired investments for which a portion has been recognized in earnings, income tax	1,883	2,472	16,227
Change in accumulated gain - derivatives, income tax	(1)	395	1,108
Reclassification adjustment for derivative amounts included in net income, income tax	$ 622	$ 822	$ 1,120